[thirdparty/u-boot.git] / cmd / bootefi.c

/*
 *  EFI application loader
 *
 *  Copyright (c) 2016 Alexander Graf
 *
 *  SPDX-License-Identifier:     GPL-2.0+
 */

#include <charset.h>
#include <common.h>
#include <command.h>
#include <dm.h>
#include <efi_loader.h>
#include <efi_selftest.h>
#include <errno.h>
#include <libfdt.h>
#include <libfdt_env.h>
#include <memalign.h>
#include <asm/global_data.h>
#include <asm-generic/sections.h>
#include <linux/linkage.h>

DECLARE_GLOBAL_DATA_PTR;

static uint8_t efi_obj_list_initalized;

static struct efi_device_path *bootefi_image_path;
static struct efi_device_path *bootefi_device_path;

/* Initialize and populate EFI object list */
static void efi_init_obj_list(void)
{
	efi_obj_list_initalized = 1;

	efi_console_register();
#ifdef CONFIG_PARTITIONS
	efi_disk_register();
#endif
#if defined(CONFIG_LCD) || defined(CONFIG_DM_VIDEO)
	efi_gop_register();
#endif
#ifdef CONFIG_NET
	efi_net_register();
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
	efi_smbios_register();
#endif
	efi_watchdog_register();

	/* Initialize EFI runtime services */
	efi_reset_system_init();
	efi_get_time_init();
}

/*
 * Set the load options of an image from an environment variable.
 *
 * @loaded_image_info:	the image
 * @env_var:		name of the environment variable
 */
static void set_load_options(struct efi_loaded_image *loaded_image_info,
			     const char *env_var)
{
	size_t size;
	const char *env = env_get(env_var);

	loaded_image_info->load_options = NULL;
	loaded_image_info->load_options_size = 0;
	if (!env)
		return;
	size = strlen(env) + 1;
	loaded_image_info->load_options = calloc(size, sizeof(u16));
	if (!loaded_image_info->load_options) {
		printf("ERROR: Out of memory\n");
		return;
	}
	utf8_to_utf16(loaded_image_info->load_options, (u8 *)env, size);
	loaded_image_info->load_options_size = size * 2;
}

static void *copy_fdt(void *fdt)
{
	u64 fdt_size = fdt_totalsize(fdt);
	unsigned long fdt_ram_start = -1L, fdt_pages;
	u64 new_fdt_addr;
	void *new_fdt;
	int i;

        for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
                u64 ram_start = gd->bd->bi_dram[i].start;
                u64 ram_size = gd->bd->bi_dram[i].size;

		if (!ram_size)
			continue;

		if (ram_start < fdt_ram_start)
			fdt_ram_start = ram_start;
	}

	/* Give us at least 4kb breathing room */
	fdt_size = ALIGN(fdt_size + 4096, EFI_PAGE_SIZE);
	fdt_pages = fdt_size >> EFI_PAGE_SHIFT;

	/* Safe fdt location is at 128MB */
	new_fdt_addr = fdt_ram_start + (128 * 1024 * 1024) + fdt_size;
	if (efi_allocate_pages(1, EFI_BOOT_SERVICES_DATA, fdt_pages,
			       &new_fdt_addr) != EFI_SUCCESS) {
		/* If we can't put it there, put it somewhere */
		new_fdt_addr = (ulong)memalign(EFI_PAGE_SIZE, fdt_size);
		if (efi_allocate_pages(1, EFI_BOOT_SERVICES_DATA, fdt_pages,
				       &new_fdt_addr) != EFI_SUCCESS) {
			printf("ERROR: Failed to reserve space for FDT\n");
			return NULL;
		}
	}

	new_fdt = (void*)(ulong)new_fdt_addr;
	memcpy(new_fdt, fdt, fdt_totalsize(fdt));
	fdt_set_totalsize(new_fdt, fdt_size);

	return new_fdt;
}

static efi_status_t efi_do_enter(
			void *image_handle, struct efi_system_table *st,
			asmlinkage ulong (*entry)(void *image_handle,
						  struct efi_system_table *st))
{
	efi_status_t ret = EFI_LOAD_ERROR;

	if (entry)
		ret = entry(image_handle, st);
	st->boottime->exit(image_handle, ret, 0, NULL);
	return ret;
}

#ifdef CONFIG_ARM64
static efi_status_t efi_run_in_el2(asmlinkage ulong (*entry)(
			void *image_handle, struct efi_system_table *st),
			void *image_handle, struct efi_system_table *st)
{
	/* Enable caches again */
	dcache_enable();

	return efi_do_enter(image_handle, st, entry);
}
#endif

/*
 * Load an EFI payload into a newly allocated piece of memory, register all
 * EFI objects it would want to access and jump to it.
 */
static efi_status_t do_bootefi_exec(void *efi, void *fdt,
				    struct efi_device_path *device_path,
				    struct efi_device_path *image_path)
{
	struct efi_loaded_image loaded_image_info = {};
	struct efi_object loaded_image_info_obj = {};
	struct efi_device_path *memdp = NULL;
	ulong ret;

	ulong (*entry)(void *image_handle, struct efi_system_table *st)
		asmlinkage;
	ulong fdt_pages, fdt_size, fdt_start, fdt_end;
	const efi_guid_t fdt_guid = EFI_FDT_GUID;
	bootm_headers_t img = { 0 };

	/*
	 * Special case for efi payload not loaded from disk, such as
	 * 'bootefi hello' or for example payload loaded directly into
	 * memory via jtag/etc:
	 */
	if (!device_path && !image_path) {
		printf("WARNING: using memory device/image path, this may confuse some payloads!\n");
		/* actual addresses filled in after efi_load_pe() */
		memdp = efi_dp_from_mem(0, 0, 0);
		device_path = image_path = memdp;
	} else {
		assert(device_path && image_path);
	}

	/* Initialize and populate EFI object list */
	if (!efi_obj_list_initalized)
		efi_init_obj_list();

	efi_setup_loaded_image(&loaded_image_info, &loaded_image_info_obj,
			       device_path, image_path);

	/*
	 * gd lives in a fixed register which may get clobbered while we execute
	 * the payload. So save it here and restore it on every callback entry
	 */
	efi_save_gd();

	if (fdt && !fdt_check_header(fdt)) {
		/* Prepare fdt for payload */
		fdt = copy_fdt(fdt);

		if (image_setup_libfdt(&img, fdt, 0, NULL)) {
			printf("ERROR: Failed to process device tree\n");
			return -EINVAL;
		}

		/* Link to it in the efi tables */
		efi_install_configuration_table(&fdt_guid, fdt);

		/* And reserve the space in the memory map */
		fdt_start = ((ulong)fdt) & ~EFI_PAGE_MASK;
		fdt_end = ((ulong)fdt) + fdt_totalsize(fdt);
		fdt_size = (fdt_end - fdt_start) + EFI_PAGE_MASK;
		fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
		/* Give a bootloader the chance to modify the device tree */
		fdt_pages += 2;
		efi_add_memory_map(fdt_start, fdt_pages,
				   EFI_BOOT_SERVICES_DATA, true);
	} else {
		printf("WARNING: Invalid device tree, expect boot to fail\n");
		efi_install_configuration_table(&fdt_guid, NULL);
	}

	/* Load the EFI payload */
	entry = efi_load_pe(efi, &loaded_image_info);
	if (!entry) {
		ret = -ENOENT;
		goto exit;
	}

	if (memdp) {
		struct efi_device_path_memory *mdp = (void *)memdp;
		mdp->memory_type = loaded_image_info.image_code_type;
		mdp->start_address = (uintptr_t)loaded_image_info.image_base;
		mdp->end_address = mdp->start_address +
				loaded_image_info.image_size;
	}

	/* we don't support much: */
	env_set("efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_OsIndicationsSupported",
		"{ro,boot}(blob)0000000000000000");

	/* Call our payload! */
	debug("%s:%d Jumping to 0x%lx\n", __func__, __LINE__, (long)entry);

	if (setjmp(&loaded_image_info.exit_jmp)) {
		ret = loaded_image_info.exit_status;
		goto exit;
	}

#ifdef CONFIG_ARM64
	/* On AArch64 we need to make sure we call our payload in < EL3 */
	if (current_el() == 3) {
		smp_kick_all_cpus();
		dcache_disable();	/* flush cache before switch to EL2 */

		/* Move into EL2 and keep running there */
		armv8_switch_to_el2((ulong)entry, (ulong)&loaded_image_info,
				    (ulong)&systab, 0, (ulong)efi_run_in_el2,
				    ES_TO_AARCH64);

		/* Should never reach here, efi exits with longjmp */
		while (1) { }
	}
#endif

	ret = efi_do_enter(&loaded_image_info, &systab, entry);

exit:
	/* image has returned, loaded-image obj goes *poof*: */
	list_del(&loaded_image_info_obj.link);

	return ret;
}

static int do_bootefi_bootmgr_exec(unsigned long fdt_addr)
{
	struct efi_device_path *device_path, *file_path;
	void *addr;
	efi_status_t r;

	/* Initialize and populate EFI object list */
	if (!efi_obj_list_initalized)
		efi_init_obj_list();

	/*
	 * gd lives in a fixed register which may get clobbered while we execute
	 * the payload. So save it here and restore it on every callback entry
	 */
	efi_save_gd();

	addr = efi_bootmgr_load(&device_path, &file_path);
	if (!addr)
		return 1;

	printf("## Starting EFI application at %p ...\n", addr);
	r = do_bootefi_exec(addr, (void *)fdt_addr, device_path, file_path);
	printf("## Application terminated, r = %lu\n",
	       r & ~EFI_ERROR_MASK);

	if (r != EFI_SUCCESS)
		return 1;

	return 0;
}

/* Interpreter command to boot an arbitrary EFI image from memory */
static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char *saddr, *sfdt;
	unsigned long addr, fdt_addr = 0;
	efi_status_t r;

	if (argc < 2)
		return CMD_RET_USAGE;
#ifdef CONFIG_CMD_BOOTEFI_HELLO
	if (!strcmp(argv[1], "hello")) {
		ulong size = __efi_helloworld_end - __efi_helloworld_begin;

		saddr = env_get("loadaddr");
		if (saddr)
			addr = simple_strtoul(saddr, NULL, 16);
		else
			addr = CONFIG_SYS_LOAD_ADDR;
		memcpy((char *)addr, __efi_helloworld_begin, size);
	} else
#endif
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	if (!strcmp(argv[1], "selftest")) {
		struct efi_loaded_image loaded_image_info = {};
		struct efi_object loaded_image_info_obj = {};

		/* Construct a dummy device path. */
		bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
						      (uintptr_t)&efi_selftest,
						      (uintptr_t)&efi_selftest);
		bootefi_image_path = efi_dp_from_file(NULL, 0, "\\selftest");

		efi_setup_loaded_image(&loaded_image_info,
				       &loaded_image_info_obj,
				       bootefi_device_path, bootefi_image_path);
		/*
		 * gd lives in a fixed register which may get clobbered while we
		 * execute the payload. So save it here and restore it on every
		 * callback entry
		 */
		efi_save_gd();
		/* Initialize and populate EFI object list */
		if (!efi_obj_list_initalized)
			efi_init_obj_list();
		/* Transfer environment variable efi_selftest as load options */
		set_load_options(&loaded_image_info, "efi_selftest");
		/* Execute the test */
		r = efi_selftest(&loaded_image_info, &systab);
		free(loaded_image_info.load_options);
		return r;
	} else
#endif
	if (!strcmp(argv[1], "bootmgr")) {
		unsigned long fdt_addr = 0;

		if (argc > 2)
			fdt_addr = simple_strtoul(argv[2], NULL, 16);

		return do_bootefi_bootmgr_exec(fdt_addr);
	} else {
		saddr = argv[1];

		addr = simple_strtoul(saddr, NULL, 16);

		if (argc > 2) {
			sfdt = argv[2];
			fdt_addr = simple_strtoul(sfdt, NULL, 16);
		}
	}

	printf("## Starting EFI application at %08lx ...\n", addr);
	r = do_bootefi_exec((void *)addr, (void *)fdt_addr,
			    bootefi_device_path, bootefi_image_path);
	printf("## Application terminated, r = %lu\n",
	       r & ~EFI_ERROR_MASK);

	if (r != EFI_SUCCESS)
		return 1;
	else
		return 0;
}

#ifdef CONFIG_SYS_LONGHELP
static char bootefi_help_text[] =
	"<image address> [fdt address]\n"
	"  - boot EFI payload stored at address <image address>.\n"
	"    If specified, the device tree located at <fdt address> gets\n"
	"    exposed as EFI configuration table.\n"
#ifdef CONFIG_CMD_BOOTEFI_HELLO
	"bootefi hello\n"
	"  - boot a sample Hello World application stored within U-Boot\n"
#endif
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	"bootefi selftest\n"
	"  - boot an EFI selftest application stored within U-Boot\n"
	"    Use environment variable efi_selftest to select a single test.\n"
	"    Use 'setenv efi_selftest list' to enumerate all tests.\n"
#endif
	"bootmgr [fdt addr]\n"
	"  - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
	"\n"
	"    If specified, the device tree located at <fdt address> gets\n"
	"    exposed as EFI configuration table.\n";
#endif

U_BOOT_CMD(
	bootefi, 3, 0, do_bootefi,
	"Boots an EFI payload from memory",
	bootefi_help_text
);

static int parse_partnum(const char *devnr)
{
	const char *str = strchr(devnr, ':');
	if (str) {
		str++;
		return simple_strtoul(str, NULL, 16);
	}
	return 0;
}

void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
{
	char filename[32] = { 0 }; /* dp->str is u16[32] long */
	char *s;

	if (strcmp(dev, "Net")) {
		struct blk_desc *desc;
		int part;

		desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
		part = parse_partnum(devnr);

		bootefi_device_path = efi_dp_from_part(desc, part);
	} else {
#ifdef CONFIG_NET
		bootefi_device_path = efi_dp_from_eth();
#endif
	}

	if (!path)
		return;

	if (strcmp(dev, "Net")) {
		/* Add leading / to fs paths, because they're absolute */
		snprintf(filename, sizeof(filename), "/%s", path);
	} else {
		snprintf(filename, sizeof(filename), "%s", path);
	}
	/* DOS style file path: */
	s = filename;
	while ((s = strchr(s, '/')))
		*s++ = '\\';
	bootefi_image_path = efi_dp_from_file(NULL, 0, filename);
}
Commit	Line	Data
b9939336 AG	1	/*
	2	* EFI application loader
	3	*
	4	* Copyright (c) 2016 Alexander Graf
	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
d78e40d6	9	#include <charset.h>
b9939336 AG	10	#include <common.h>
b9939336 AG	11	#include <command.h>
9d922450	12	#include <dm.h>
b9939336	13	#include <efi_loader.h>
d78e40d6	14	#include <efi_selftest.h>
b9939336 AG	15	#include <errno.h>
	16	#include <libfdt.h>
	17	#include <libfdt_env.h>
ad0c1a3d	18	#include <memalign.h>
0d9d501f	19	#include <asm/global_data.h>
e275458c SG	20	#include <asm-generic/sections.h>
e275458c SG	21	#include <linux/linkage.h>
0d9d501f AG	22
0d9d501f AG	23	DECLARE_GLOBAL_DATA_PTR;
b9939336	24
7cbc1241 HS	25	static uint8_t efi_obj_list_initalized;
7cbc1241 HS	26
95c5553e RC	27	static struct efi_device_path *bootefi_image_path;
95c5553e RC	28	static struct efi_device_path *bootefi_device_path;
b9939336	29
7cbc1241 HS	30	/* Initialize and populate EFI object list */
	31	static void efi_init_obj_list(void)
	32	{
	33	efi_obj_list_initalized = 1;
	34
7cbc1241 HS	35	efi_console_register();
	36	#ifdef CONFIG_PARTITIONS
	37	efi_disk_register();
	38	#endif
	39	#if defined(CONFIG_LCD) \|\| defined(CONFIG_DM_VIDEO)
	40	efi_gop_register();
	41	#endif
	42	#ifdef CONFIG_NET
95c5553e	43	efi_net_register();
7cbc1241 HS	44	#endif
	45	#ifdef CONFIG_GENERATE_SMBIOS_TABLE
	46	efi_smbios_register();
	47	#endif
b3d60900	48	efi_watchdog_register();
7cbc1241 HS	49
	50	/* Initialize EFI runtime services */
	51	efi_reset_system_init();
	52	efi_get_time_init();
	53	}
	54
d78e40d6 HS	55	/*
	56	* Set the load options of an image from an environment variable.
	57	*
	58	* @loaded_image_info: the image
	59	* @env_var: name of the environment variable
	60	*/
	61	static void set_load_options(struct efi_loaded_image *loaded_image_info,
	62	const char *env_var)
	63	{
	64	size_t size;
	65	const char *env = env_get(env_var);
	66
	67	loaded_image_info->load_options = NULL;
	68	loaded_image_info->load_options_size = 0;
	69	if (!env)
	70	return;
	71	size = strlen(env) + 1;
	72	loaded_image_info->load_options = calloc(size, sizeof(u16));
	73	if (!loaded_image_info->load_options) {
	74	printf("ERROR: Out of memory\n");
	75	return;
	76	}
	77	utf8_to_utf16(loaded_image_info->load_options, (u8 *)env, size);
	78	loaded_image_info->load_options_size = size * 2;
	79	}
	80
0d9d501f AG	81	static void copy_fdt(void fdt)
	82	{
	83	u64 fdt_size = fdt_totalsize(fdt);
ad0c1a3d AG	84	unsigned long fdt_ram_start = -1L, fdt_pages;
ad0c1a3d AG	85	u64 new_fdt_addr;
0d9d501f	86	void *new_fdt;
ad0c1a3d	87	int i;
0d9d501f	88
ad0c1a3d AG	89	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
	90	u64 ram_start = gd->bd->bi_dram[i].start;
	91	u64 ram_size = gd->bd->bi_dram[i].size;
0d9d501f	92
ad0c1a3d AG	93	if (!ram_size)
	94	continue;
	95
	96	if (ram_start < fdt_ram_start)
	97	fdt_ram_start = ram_start;
	98	}
	99
	100	/* Give us at least 4kb breathing room */
a44bffcc	101	fdt_size = ALIGN(fdt_size + 4096, EFI_PAGE_SIZE);
ad0c1a3d AG	102	fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
	103
	104	/* Safe fdt location is at 128MB */
	105	new_fdt_addr = fdt_ram_start + (128 * 1024 * 1024) + fdt_size;
	106	if (efi_allocate_pages(1, EFI_BOOT_SERVICES_DATA, fdt_pages,
	107	&new_fdt_addr) != EFI_SUCCESS) {
	108	/* If we can't put it there, put it somewhere */
a44bffcc	109	new_fdt_addr = (ulong)memalign(EFI_PAGE_SIZE, fdt_size);
85a6e9b3 AG	110	if (efi_allocate_pages(1, EFI_BOOT_SERVICES_DATA, fdt_pages,
	111	&new_fdt_addr) != EFI_SUCCESS) {
	112	printf("ERROR: Failed to reserve space for FDT\n");
	113	return NULL;
	114	}
ad0c1a3d	115	}
85a6e9b3	116
ad0c1a3d	117	new_fdt = (void*)(ulong)new_fdt_addr;
0d9d501f AG	118	memcpy(new_fdt, fdt, fdt_totalsize(fdt));
	119	fdt_set_totalsize(new_fdt, fdt_size);
	120
	121	return new_fdt;
	122	}
	123
3eb0841b HS	124	static efi_status_t efi_do_enter(
	125	void image_handle, struct efi_system_table st,
	126	asmlinkage ulong (entry)(void image_handle,
	127	struct efi_system_table *st))
b06d8ac3 HS	128	{
	129	efi_status_t ret = EFI_LOAD_ERROR;
	130
	131	if (entry)
	132	ret = entry(image_handle, st);
	133	st->boottime->exit(image_handle, ret, 0, NULL);
	134	return ret;
	135	}
	136
ec6617c3	137	#ifdef CONFIG_ARM64
3eb0841b	138	static efi_status_t efi_run_in_el2(asmlinkage ulong (*entry)(
b06d8ac3 HS	139	void image_handle, struct efi_system_table st),
b06d8ac3 HS	140	void image_handle, struct efi_system_table st)
ec6617c3 AW	141	{
	142	/* Enable caches again */
	143	dcache_enable();
	144
b06d8ac3	145	return efi_do_enter(image_handle, st, entry);
ec6617c3 AW	146	}
	147	#endif
	148
b9939336 AG	149	/*
	150	* Load an EFI payload into a newly allocated piece of memory, register all
	151	* EFI objects it would want to access and jump to it.
	152	*/
3eb0841b HS	153	static efi_status_t do_bootefi_exec(void efi, void fdt,
	154	struct efi_device_path *device_path,
	155	struct efi_device_path *image_path)
b9939336	156	{
95c5553e RC	157	struct efi_loaded_image loaded_image_info = {};
95c5553e RC	158	struct efi_object loaded_image_info_obj = {};
bf19273e	159	struct efi_device_path *memdp = NULL;
95c5553e RC	160	ulong ret;
95c5553e RC	161
e275458c SG	162	ulong (entry)(void image_handle, struct efi_system_table *st)
e275458c SG	163	asmlinkage;
b9939336	164	ulong fdt_pages, fdt_size, fdt_start, fdt_end;
f4f9993f	165	const efi_guid_t fdt_guid = EFI_FDT_GUID;
dea2174d	166	bootm_headers_t img = { 0 };
b9939336	167
bf19273e RC	168	/*
	169	* Special case for efi payload not loaded from disk, such as
	170	* 'bootefi hello' or for example payload loaded directly into
	171	* memory via jtag/etc:
	172	*/
	173	if (!device_path && !image_path) {
	174	printf("WARNING: using memory device/image path, this may confuse some payloads!\n");
	175	/* actual addresses filled in after efi_load_pe() */
	176	memdp = efi_dp_from_mem(0, 0, 0);
	177	device_path = image_path = memdp;
	178	} else {
	179	assert(device_path && image_path);
	180	}
	181
95c5553e RC	182	/* Initialize and populate EFI object list */
	183	if (!efi_obj_list_initalized)
	184	efi_init_obj_list();
	185
	186	efi_setup_loaded_image(&loaded_image_info, &loaded_image_info_obj,
	187	device_path, image_path);
	188
b9939336 AG	189	/*
	190	* gd lives in a fixed register which may get clobbered while we execute
	191	* the payload. So save it here and restore it on every callback entry
	192	*/
	193	efi_save_gd();
	194
1c39809b	195	if (fdt && !fdt_check_header(fdt)) {
dea2174d	196	/* Prepare fdt for payload */
0d9d501f AG	197	fdt = copy_fdt(fdt);
	198
	199	if (image_setup_libfdt(&img, fdt, 0, NULL)) {
dea2174d AG	200	printf("ERROR: Failed to process device tree\n");
	201	return -EINVAL;
	202	}
	203
	204	/* Link to it in the efi tables */
f4f9993f	205	efi_install_configuration_table(&fdt_guid, fdt);
b9939336 AG	206
b9939336 AG	207	/* And reserve the space in the memory map */
0d9d501f AG	208	fdt_start = ((ulong)fdt) & ~EFI_PAGE_MASK;
0d9d501f AG	209	fdt_end = ((ulong)fdt) + fdt_totalsize(fdt);
b9939336 AG	210	fdt_size = (fdt_end - fdt_start) + EFI_PAGE_MASK;
	211	fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
	212	/* Give a bootloader the chance to modify the device tree */
	213	fdt_pages += 2;
	214	efi_add_memory_map(fdt_start, fdt_pages,
	215	EFI_BOOT_SERVICES_DATA, true);
b9939336	216	} else {
1c39809b	217	printf("WARNING: Invalid device tree, expect boot to fail\n");
f4f9993f	218	efi_install_configuration_table(&fdt_guid, NULL);
b9939336 AG	219	}
	220
	221	/* Load the EFI payload */
	222	entry = efi_load_pe(efi, &loaded_image_info);
95c5553e RC	223	if (!entry) {
	224	ret = -ENOENT;
	225	goto exit;
	226	}
80a4800e	227
bf19273e RC	228	if (memdp) {
	229	struct efi_device_path_memory mdp = (void )memdp;
	230	mdp->memory_type = loaded_image_info.image_code_type;
	231	mdp->start_address = (uintptr_t)loaded_image_info.image_base;
	232	mdp->end_address = mdp->start_address +
	233	loaded_image_info.image_size;
	234	}
	235
ad644e7c RC	236	/* we don't support much: */
	237	env_set("efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_OsIndicationsSupported",
	238	"{ro,boot}(blob)0000000000000000");
	239
b9939336	240	/* Call our payload! */
edcef3ba	241	debug("%s:%d Jumping to 0x%lx\n", __func__, __LINE__, (long)entry);
a86aeaf2 AG	242
a86aeaf2 AG	243	if (setjmp(&loaded_image_info.exit_jmp)) {
95c5553e	244	ret = loaded_image_info.exit_status;
95c5553e	245	goto exit;
a86aeaf2 AG	246	}
a86aeaf2 AG	247
69bd459d AG	248	#ifdef CONFIG_ARM64
	249	/* On AArch64 we need to make sure we call our payload in < EL3 */
	250	if (current_el() == 3) {
	251	smp_kick_all_cpus();
	252	dcache_disable(); /* flush cache before switch to EL2 */
ec6617c3 AW	253
	254	/* Move into EL2 and keep running there */
	255	armv8_switch_to_el2((ulong)entry, (ulong)&loaded_image_info,
7c5e1feb	256	(ulong)&systab, 0, (ulong)efi_run_in_el2,
ec6617c3 AW	257	ES_TO_AARCH64);
	258
	259	/* Should never reach here, efi exits with longjmp */
	260	while (1) { }
69bd459d AG	261	}
	262	#endif
	263
95c5553e RC	264	ret = efi_do_enter(&loaded_image_info, &systab, entry);
	265
	266	exit:
	267	/* image has returned, loaded-image obj goes poof: */
	268	list_del(&loaded_image_info_obj.link);
	269
	270	return ret;
b9939336 AG	271	}
b9939336 AG	272
9975fe96 RC	273	static int do_bootefi_bootmgr_exec(unsigned long fdt_addr)
	274	{
	275	struct efi_device_path device_path, file_path;
	276	void *addr;
	277	efi_status_t r;
	278
	279	/* Initialize and populate EFI object list */
	280	if (!efi_obj_list_initalized)
	281	efi_init_obj_list();
	282
	283	/*
	284	* gd lives in a fixed register which may get clobbered while we execute
	285	* the payload. So save it here and restore it on every callback entry
	286	*/
	287	efi_save_gd();
	288
	289	addr = efi_bootmgr_load(&device_path, &file_path);
	290	if (!addr)
	291	return 1;
	292
	293	printf("## Starting EFI application at %p ...\n", addr);
	294	r = do_bootefi_exec(addr, (void *)fdt_addr, device_path, file_path);
	295	printf("## Application terminated, r = %lu\n",
	296	r & ~EFI_ERROR_MASK);
	297
	298	if (r != EFI_SUCCESS)
	299	return 1;
	300
	301	return 0;
	302	}
	303
b9939336 AG	304	/* Interpreter command to boot an arbitrary EFI image from memory */
	305	static int do_bootefi(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	306	{
1c39809b AG	307	char saddr, sfdt;
1c39809b AG	308	unsigned long addr, fdt_addr = 0;
3eb0841b	309	efi_status_t r;
b9939336 AG	310
b9939336 AG	311	if (argc < 2)
3c1dcef6	312	return CMD_RET_USAGE;
c7ae3dfd SG	313	#ifdef CONFIG_CMD_BOOTEFI_HELLO
c7ae3dfd SG	314	if (!strcmp(argv[1], "hello")) {
5e44489b	315	ulong size = __efi_helloworld_end - __efi_helloworld_begin;
b9939336	316
51c533fd HS	317	saddr = env_get("loadaddr");
	318	if (saddr)
	319	addr = simple_strtoul(saddr, NULL, 16);
	320	else
	321	addr = CONFIG_SYS_LOAD_ADDR;
5e44489b	322	memcpy((char *)addr, __efi_helloworld_begin, size);
c7ae3dfd	323	} else
623b3a57 HS	324	#endif
	325	#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	326	if (!strcmp(argv[1], "selftest")) {
7aca68ca HS	327	struct efi_loaded_image loaded_image_info = {};
	328	struct efi_object loaded_image_info_obj = {};
	329
f972dc14 HS	330	/* Construct a dummy device path. */
	331	bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
	332	(uintptr_t)&efi_selftest,
	333	(uintptr_t)&efi_selftest);
	334	bootefi_image_path = efi_dp_from_file(NULL, 0, "\\selftest");
	335
7aca68ca HS	336	efi_setup_loaded_image(&loaded_image_info,
	337	&loaded_image_info_obj,
	338	bootefi_device_path, bootefi_image_path);
623b3a57 HS	339	/*
	340	* gd lives in a fixed register which may get clobbered while we
	341	* execute the payload. So save it here and restore it on every
	342	* callback entry
	343	*/
	344	efi_save_gd();
	345	/* Initialize and populate EFI object list */
	346	if (!efi_obj_list_initalized)
	347	efi_init_obj_list();
d78e40d6 HS	348	/* Transfer environment variable efi_selftest as load options */
	349	set_load_options(&loaded_image_info, "efi_selftest");
	350	/* Execute the test */
	351	r = efi_selftest(&loaded_image_info, &systab);
	352	free(loaded_image_info.load_options);
	353	return r;
623b3a57	354	} else
c7ae3dfd	355	#endif
9975fe96 RC	356	if (!strcmp(argv[1], "bootmgr")) {
	357	unsigned long fdt_addr = 0;
	358
	359	if (argc > 2)
	360	fdt_addr = simple_strtoul(argv[2], NULL, 16);
	361
	362	return do_bootefi_bootmgr_exec(fdt_addr);
	363	} else {
c7ae3dfd	364	saddr = argv[1];
b9939336	365
c7ae3dfd SG	366	addr = simple_strtoul(saddr, NULL, 16);
	367
	368	if (argc > 2) {
	369	sfdt = argv[2];
	370	fdt_addr = simple_strtoul(sfdt, NULL, 16);
	371	}
1c39809b AG	372	}
1c39809b AG	373
5ee31baf	374	printf("## Starting EFI application at %08lx ...\n", addr);
95c5553e RC	375	r = do_bootefi_exec((void )addr, (void )fdt_addr,
95c5553e RC	376	bootefi_device_path, bootefi_image_path);
1da1bac4 HS	377	printf("## Application terminated, r = %lu\n",
1da1bac4 HS	378	r & ~EFI_ERROR_MASK);
b9939336	379
1da1bac4 HS	380	if (r != EFI_SUCCESS)
	381	return 1;
	382	else
	383	return 0;
b9939336 AG	384	}
	385
	386	#ifdef CONFIG_SYS_LONGHELP
	387	static char bootefi_help_text[] =
1c39809b AG	388	"<image address> [fdt address]\n"
	389	" - boot EFI payload stored at address <image address>.\n"
	390	" If specified, the device tree located at <fdt address> gets\n"
c7ae3dfd SG	391	" exposed as EFI configuration table.\n"
c7ae3dfd SG	392	#ifdef CONFIG_CMD_BOOTEFI_HELLO
623b3a57 HS	393	"bootefi hello\n"
	394	" - boot a sample Hello World application stored within U-Boot\n"
	395	#endif
	396	#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
	397	"bootefi selftest\n"
	398	" - boot an EFI selftest application stored within U-Boot\n"
d78e40d6 HS	399	" Use environment variable efi_selftest to select a single test.\n"
d78e40d6 HS	400	" Use 'setenv efi_selftest list' to enumerate all tests.\n"
c7ae3dfd	401	#endif
9975fe96 RC	402	"bootmgr [fdt addr]\n"
	403	" - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
	404	"\n"
	405	" If specified, the device tree located at <fdt address> gets\n"
	406	" exposed as EFI configuration table.\n";
b9939336 AG	407	#endif
	408
	409	U_BOOT_CMD(
1c39809b	410	bootefi, 3, 0, do_bootefi,
92dfd922	411	"Boots an EFI payload from memory",
b9939336 AG	412	bootefi_help_text
b9939336 AG	413	);
0f4060eb	414
95c5553e	415	static int parse_partnum(const char *devnr)
0f4060eb	416	{
95c5553e RC	417	const char *str = strchr(devnr, ':');
	418	if (str) {
	419	str++;
	420	return simple_strtoul(str, NULL, 16);
f9d334bd	421	}
95c5553e RC	422	return 0;
95c5553e RC	423	}
f9d334bd	424
95c5553e RC	425	void efi_set_bootdev(const char dev, const char devnr, const char *path)
	426	{
	427	char filename[32] = { 0 }; /* dp->str is u16[32] long */
	428	char *s;
f9d334bd	429
95c5553e RC	430	if (strcmp(dev, "Net")) {
	431	struct blk_desc *desc;
	432	int part;
8c3df0bf	433
95c5553e RC	434	desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
95c5553e RC	435	part = parse_partnum(devnr);
0f4060eb	436
95c5553e RC	437	bootefi_device_path = efi_dp_from_part(desc, part);
	438	} else {
	439	#ifdef CONFIG_NET
	440	bootefi_device_path = efi_dp_from_eth();
	441	#endif
	442	}
c07ad7c0	443
9975fe96 RC	444	if (!path)
	445	return;
	446
49271666 AG	447	if (strcmp(dev, "Net")) {
49271666 AG	448	/* Add leading / to fs paths, because they're absolute */
95c5553e	449	snprintf(filename, sizeof(filename), "/%s", path);
49271666	450	} else {
95c5553e	451	snprintf(filename, sizeof(filename), "%s", path);
49271666	452	}
3e433e96	453	/* DOS style file path: */
95c5553e	454	s = filename;
3e433e96 RC	455	while ((s = strchr(s, '/')))
3e433e96 RC	456	*s++ = '\\';
95c5553e	457	bootefi_image_path = efi_dp_from_file(NULL, 0, filename);
0f4060eb	458	}